Laserfiche WebLink
<br />The following revisions are submitted as additional information to the Refuse Area ~°~~~~~ <br />Sedimentation Pond Plan for the New Elk hAine. <br />1. ~uyoming Fuel Company will compact all embankment fill to at least 95°~ of <br />maximum density at optimum moisture as defined by the modified proctor. <br />2. 'fhe crest of the dam will have a 19b slope towards the upstream side of the <br />clam. <br />3. A concrete bearing pad will be placed directly beneath the principal spillway <br />riser. The pad size and calculations are shown on Sheet 8. <br />4. l"he emergency spillway location and sizing has been changed. The horizontal <br />crest spillway section has been sized using the weir formula and 1/2 PMP, 6 <br />I'.our duration. The remainder of the spillway was sized using mannings <br />equation. The supporting calculations are on Sheets 4 through 7. <br />PJew locations for the emergency and principal spillways are shown on •, <br />figures 2 and 3, Revision Number 1. Also shown on this revision is the new <br />cam crest elevation of 7,461.00 feet. <br />l•he emergency spillway will be comprised of rock filled gabion baskets with a <br />concrete type grout. Specifications for the grouted baskets are enclosed. <br /> <br />